NASA Spacewalkers Install Station’s Fourth Roll-Out Solar Array

NASA Spacewalkers Install Station’s Fourth Roll-Out Solar Array

NASA spacewalker Josh Cassada prepares a roll-out solar array for its deployment on the space station's Port-4 truss segment as the orbiting lab flew above the Atlantic Ocean.
NASA spacewalker Josh Cassada prepares the station’s fourth roll-out solar array for its installation and deployment as the orbiting lab flew above the Atlantic Ocean off the coast of Namibia.

Expedition 68 Flight Engineers Josh Cassada and Frank Rubio of NASA concluded their spacewalk at 3:27 p.m. EST after 7 hours and 8 minutes.

Cassada and Rubio completed their major objectives for today to install an International Space Station Roll-Out Solar Array (iROSA) on the 4A power channel on the port truss. The iROSAs will increase power generation capability by up to 30%, increasing the station’s total available power from 160 kilowatts to up to 215 kilowatts.

It was the 257th spacewalk in support of space station assembly, upgrades, and maintenance, and was the third spacewalk for both astronauts.

Cassada and Rubio are in the midst of a planned six-month science mission living and working aboard the microgravity laboratory to advance scientific knowledge and demonstrate new technologies for future human and robotic exploration missions, including lunar missions through NASA’s Artemis program.

While Thursday’s spacewalk was underway, NASA Space Station Program Manager Joel Montalbano and Roscosmos Human Spaceflight Executive Director Sergei Krikalev participated in an audio-only media teleconference. The two space executives discussed the ongoing investigation of an external leak detected on the Soyuz MS-22 crew ship. Ground teams continue to assess data and options for the safe return of crew to Earth.

Listen to the teleconference here.

A transcript of the telecon will be provided once available.


Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: https://roundupreads.jsc.nasa.gov/videoupdate/

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Mark Garcia

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NASA Astronauts Begin Spacewalk to Install Solar Array

NASA Astronauts Begin Spacewalk to Install Solar Array

Astronaut Frank Rubio is pictured during a spacewalk on Nov. 15, 2022, tethered to the space station's starboard truss structure during an orbital sunset.
Astronaut Frank Rubio is pictured during a spacewalk on Nov. 15, 2022, tethered to the space station’s starboard truss structure during an orbital sunset.

Expedition 68 Flight Engineers Josh Cassada and Frank Rubio of NASA began a spacewalk at 8:19 a.m. EST to install an International Space Station Roll-Out Solar Array (iROSA) to augment power generation for the 4A power channel on the station’s port truss structure.

Rubio, designated extravehicular crew member 1 (EV1), is wearing a suit with red stripes. Cassada, designated extravehicular crewmember 2 (EV 2), is in an unmarked suit. Coverage of the spacewalk continues on NASA Television, the NASA app, and the agency’s website.


Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: https://roundupreads.jsc.nasa.gov/videoupdate/

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Heidi Lavelle

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Watch Live as NASA Astronauts Prep for Spacewalk to Upgrade Station Power System

Watch Live as NASA Astronauts Prep for Spacewalk to Upgrade Station Power System

NASA spacewalker Josh Cassada rides the Canadarm2 robotic arm carrying the roll-out solar array to its installation site on the Starboard-4 truss segment. Credit: NASA TV
NASA spacewalker Josh Cassada rides the Canadarm2 robotic arm carrying the roll-out solar array to its installation site on the Starboard-4 truss segment. Credit: NASA TV

NASA Television coverage of today’s spacewalk with NASA astronauts Josh Cassada and Frank Rubio is now underway and is also available on the NASA app, the space station blog and the agency’s website.

The crew members of Expedition 68 are preparing to exit the International Space Station‘s Quest airlock for a spacewalk expected to begin about 8:30 a.m. EST and last approximately seven hours.

NASA astronauts Josh Cassada and Frank Rubio will exit the station’s Quest airlock to install an International Space Station Roll-Out Solar Array (iROSA) to augment power generation for the 4A power channel on the station’s port truss structure. The iROSAs will increase power generation capability by up to 30%, increasing the station’s total available power from 160 kilowatts to up to 215 kilowatts.

Rubio will serve as extravehicular crew member 1 (EV 1) and will wear a suit with red stripes. Cassada will serve as extravehicular crew member 2 (EV 2) and will wear the unmarked suit. The spacewalk will be the third for both Cassada and Rubio.


Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: https://roundupreads.jsc.nasa.gov/videoupdate/

Get the latest from NASA delivered every week. Subscribe here: www.nasa.gov/subscribe

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Heidi Lavelle

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Spacewalk Postponed to Thursday, Managers Discuss Soyuz Leak Inquiry

Spacewalk Postponed to Thursday, Managers Discuss Soyuz Leak Inquiry

NASA astronauts (from left) Frank Rubio and Josh Cassada will conduct their third spacewalk together and install the space station's fourth roll-out solar array.
NASA astronauts (from left) Frank Rubio and Josh Cassada will conduct their third spacewalk together and install the space station’s fourth roll-out solar array.

NASA astronauts Frank Rubio and Josh Cassada are now scheduled to begin a spacewalk at 8:30 a.m. EST Thursday to augment the International Space Station’s power generation system. Wednesday’s spacewalk was postponed for 24 hours so that the orbiting lab’s ISS Progress 81 cargo craft could fire its engines at 8:42 a.m. to maneuver the station and avoid an approaching piece of rocket debris.

Spacewalkers Rubio and Cassada will install another roll-out solar array, also known as an International Space Station Roll-Out Solar Array (iROSA), on the space station’s truss structure. This time the duo will maneuver to the opposite side of the station and install the fourth iROSA on the Port-4 truss structure. The external installation job will last about seven hours and broadcast live on NASA TV on the agency’s app and its website.

Expedition 68 Flight Engineers Nicole Mann of NASA and Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) will operate the Canadarm2 robotic arm to support the spacewalkers during the fine-tuned iROSA installation job. The duo will also assist Rubio and Cassada in and out of their spacesuits, also known as Extravehicular Mobility Units (EMUs), in the Quest airlock before and after their spacewalk.

While Thursday’s spacewalk is under way, NASA space station program manager Joel Montalbano and Roscosmos human spaceflight executive director Sergei Krikalev will hold an audio-only media teleconference 11 a.m. The two space executives will discuss the ongoing investigation of an external leak detected on the Soyuz MS-22 crew ship on a live audio call streaming on NASA’s website at https://www.nasa.gov/live.

The three cosmonauts representing Expedition 68, Commander Sergey Prokopyev and Flight Engineers Dmitri Petelin and Anna Kikina, stayed focused on lab maintenance servicing and cleaning a variety station hardware today.


Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: https://roundupreads.jsc.nasa.gov/videupdate/

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Mark Garcia

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Space Station Maneuvers to Avoid Debris After Conjunction Postpones Spacewalk

Space Station Maneuvers to Avoid Debris After Conjunction Postpones Spacewalk

The space station was pictured from the SpaceX Crew Dragon Endeavour during its departure on Nov. 8, 2021.
The space station was pictured from the SpaceX Crew Dragon Endeavour during its departure on Nov. 8, 2021.

The International Space Station conducted a Pre-Determined Debris Avoidance Maneuver (PDAM) today, Dec. 21, at 8:42 a.m. EST. The decision to conduct the maneuver was based on tracking data that showed a close approach to station of a fragment of Russian Fregat-SB upper stage debris.

During the manuever, the Roscosmos Progress 81 thrusters fired for 10 minutes, 21 seconds to provide the complex an extra measure of distance away from the predicted track of the debris. Without the maneuver, it was estimated that the debris could have passed less than a quarter of a mile from the station.

The decision to conduct the maneuver earlier this morning resulted in a postponement of today’s planned spacewalk by NASA astronauts Frank Rubio and Josh Cassada. The crew was never in any immediate danger.


Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: https://roundupreads.jsc.nasa.gov/videoupdate/

Get the latest from NASA delivered every week. Subscribe here: www.nasa.gov/subscribe

Get The Details…

Heidi Lavelle

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